opportunistic
Concise Oxford English Dictionary © 2008 Oxford University Press:
opportunistic/ɒpətjuːˈnɪstɪk/
▶adjective
- 1 exploiting immediate opportunities, especially in an unplanned or selfish way.
- 2 Medicine (of an infection) occurring when the immune system is depressed.
– derivatives
opportunistically adverb.
opportunistically adverb.
'opportunistic' also found in these Oxford entries:

